Upload multiple images using a many-to-many using Yii2 - rest

Question

How to make loading multiple images and making many-to-many relationships on a table of apartments?
I have a model Apartment:
public function getApartmentImages()
{
return $this->hasMany(ApartmentImages::className(), ['apartment_id' => 'id']);
}
public function getImages()
{
return $this->hasMany(Images::className(), ['id' => 'image_id'])
->via('apartmentImages');
}
Model Images:
public function getApartmentImages()
{
return $this->hasMany(ApartmentImages::className(), ['image_id' => 'id']);
}
/**
* #return \yii\db\ActiveQuery
*/
public function getApartments()
{
return $this->hasMany(Apartment::className(), ['id' => 'apartment_id'])
->via('apartmentImages');
}
Model ApartmentImages
public function getImage()
{
return $this->hasOne(Images::className(), ['id' => 'image_id']);
}
public function getApartment()
{
return $this->hasOne(Apartment::className(), ['id' => 'apartment_id']);
}
The apartment has a main image (layout) and many others.
I managed to make the layout load:
public function actionCreate()
{
$model = new Apartment();
$model->load(Yii::$app->getRequest()->getBodyParams(), '');
$layout = new Images();
$layout->imageFile = UploadedFile::getInstanceByName('layout');
if ($layout->upload()) {
$model->layout_id = $layout->id;
}
if ($model->validate()) {
if ($model->save()) {
$response = Yii::$app->getResponse();
$response->setStatusCode(201);
$id = implode(',', array_values($model->getPrimaryKey(true)));
$response->getHeaders()->set('Location', Url::toRoute(['view', 'id' => $id], true));
} elseif (!$model->hasErrors()) {
throw new ServerErrorHttpException('Failed to create the object for unknown reason.');
}
}
return $model;
}

Answer 1

I filled the array with all the sent pictures, and in the loop I upload to the site, and using
//INSERT INTO `apartment_images` (`apartment_id`, `image_id`) VALUES (...)
$model->link('images', $images[0]);
I create an entry in the link table.
public function actionCreate()
{
$model = new Apartment();
$model->load(Yii::$app->getRequest()->getBodyParams(), '');
$layout = new Images();
$layout->imageFile = UploadedFile::getInstanceByName('layout');
$layout->validate();
if ($layout->upload()) {
$model->layout_id = $layout->id;
}
$count = count(UploadedFile::getInstancesByName('images'));//Get the number of images
$images = [new Images()];//First image required
$images[0]->imageFile = UploadedFile::getInstanceByName('images[0]');
if(!$images[0]->validate()) return $images[0]->errors;//Check errors
if ($model->validate()){
if ($model->save()) {
if ($images[0]->upload()) {
$model->link('images',$images[0]);//Binding many to many
}
for($i = 1; $i < $count; $i++) {//Check the rest and repeat again
$images[$i] = new Images();
$images[$i]->imageFile = UploadedFile::getInstanceByName('images['.$i.']');
if ($images[$i]->upload()) {
$model->link('images',$images[$i]);
}
}
$response = Yii::$app->getResponse();
$response->setStatusCode(201);
$id = implode(',', array_values($model->getPrimaryKey(true)));
$response->getHeaders()->set('Location', Url::toRoute(['view', 'id' => $id], true));
} elseif (!$model->hasErrors()) {
throw new ServerErrorHttpException('Failed to create the object for unknown reason.');
}
}
else return $model->errors;
return $model;
}